{{- $page := .page }}
{{- if and (not $page) .context }}
  {{- $page = .context }}
  {{- $filepath := "[virtual file]" }}{{ with and $page $page.File $page.File.Filename }}{{ $filepath = . }}{{ end }}
  {{- warnf "%q: DEPRECATED parameter 'context' for shortcode 'siteparam' found, use 'page' instead; see https://mcshelby.github.io/hugo-theme-relearn/introduction/releasenotes/5/#5-18-0" $filepath }}
{{- end }}
{{- $paramNames := split .name "." }}
{{- with $page }}
{{- $params := .Site.Params }}
{{- range $paramName := $paramNames }}
    {{- with $params }}
        {{- $params = index . (lower $paramName) }}
    {{- end }}
{{- end }}
{{- with $params }}
  {{- . }}
{{- end }}
{{- end }}